Process of making rubber footwear.



F. E. PAYNE.

PROCESS 0F MAKING RUBBER FOOTWEAR.

APPLICATION FILED IAN. I9, 1916.

Patented July 4, 1916.

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F. E. PAYNE. PROCESS 0F MAKING RUBBER FOOTWEAR.

APPLICATION FILED JAN-19,19%.

Patented July 4, 1916.

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F. E. PAYNE;

PRooE'ss oF MAKING ARUBBER rooTwEA'a. APPLICATION` FILED JAN; I9. i916- ,1 89,866. Patented July 4, 1916.

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FRED RNEST PAYNE, oF MDDLETQWN,YCONNEC'JICU,-Assmnoggigg GooDAR BUBBERLCOMP- A 1\IY, 0E MIDDLETOWN, coNNEcTLCUnfnConPQRATONL Middletown, in the ounty 'of Middlesex' and off Making RubbeiFool-Lwaij, A'offnjliicli the the 'objctfof my improvement is simpliity` and economy A1n construction land comien-V part; broken n.wzgyfivFig. 9 is'. a side eleiiution,

' on the-.smile Scale as Fig. 1'; of' a. rubber Shoo blik; Shoo-body.' igglZ is n siinilarvicn' of oF MAKINBUBBEB OTWE'AR.

V ness o xjlziyep oldie nd-ing, over thosole' portion. of the solc'bns111,"tlie heel 13 bei-ng seciiiediv t-ion, and also -tojexteiidui-mjnrlly along the l sole bottom 12 thereto in order to avoidpocketing air between these parts, which air .would `result in blisters and damaging the manipulating theysame.

goods during the vulcanizing process and. I

3 do this in the following manner g-f-The sole base 11 and the sole bottom 12 imposediupon the other, aieplacecle`lippn a table 16,.'hav1n'g a Hat topv and a roll 1,7 is

passed overlthe saine, resulting infuniting the parts, there being however special features about the roll and the manner of I prefer to roll a pair of sole struc ures at the same tune, and for doing this I providey -a roll that is relatively heavy, having a 1nanner, and which consists in moving'the -roll at a relativelyY slow speed over the parts. The -rate which I find necessary is about l one half minute for the period for a pair of sole structures.

I believe the combination of the flat table,

with the .roll of large diameter and heavy .weight and also 'the manner of manipulating4 the same at slow speed to be new.

By my process I am enabled to produce a boot having a double sole, and a beading having a knurled surface labove the sole, and also having the beading extend around the-heel portion, whichgfeatures also believe to be new.

As shown, the upper surface of the sole bottom 12, opposed to the knurlcd lowerv surface ofthe sole base 11., is originally plane or smooth, and the lower surface or 'tread portion is knurled.

As mentioned/above, the process described is applicable for producing heel structures such as shown audflescribed in Patent No. 1.161,879, in which case the U-shaped lift 13*l shown in the said patent replaces the heel 13 of the rubber boot described above.

The rubber shoe body' 10a has a sole base 11, roughened or knurled on the lower face A at the front and rear portions,` the arch portion .1S being smooth.

the tread portion or sole proper, the extra sole bottom 12 being omitted, and at the heel portion there is mounted on the said sole base 11a the heel lift 13a, of U-shape, which as mentioned is used in lieu of the solid heel 13. The bead or swelling at the lower part of the shoe body 10*L comprises portions 14Ca of roughened, knurled character,

"extending along the sole and heel-portions of the sole base 11a, interrupted adjacent the arch portion 18 by 'a bead portion 14? which securing the. heel lift 131l to the sole base The front or` body portion of the sole base 11a serves as I Vprefer to-bel smooth, corresponding to the smooth character ofthe said arch portion 1S. 'l

The apparatus described is suitable for 11a. These parts are applied one .to the other in the ul'ivulcanized condition, thesole base 11l being placed on the table 16 and the roll 17 being passed over the heel lift superimposed thereon, the rolling being eii'ected slowly. topermit air to escape between the rough or hnurled .surface of the sole base 11al and the surface of the heel lift 13a. The

roughbead 1l is formed by the portion of i the sole base 11a extending laterally beyond the heel .lift 13a and the sole base proper. After the heel lift has been applied tothe sole base 11a .in the manner described these l. parts as a unit are applied to the shoe body 10 and the parts vulcanized as usual.

rIhus in the case of the boot 10 there is provided an extra tread portion 12 in the lform of the sole bottom 12 at the front or sole portion of the sole base v11 and in the.

case of the overshoe"10 a there isprovided an extra tread portion 13al at the bottom of the rear or heel portion of. the sole base 11a, and 1n each case the said'extra tread portion `is secured to the said sole base 11 or 11a' extra tread portion 12 or 132l is roughen'ed,

and the union of the said surfaces notwithstanding the roughened character of one of the said surfaces is effected so as to make a my process, the rough surface of the sole base becoming merged into the opposed smooth surface of the extra tread portion; Thus it follows that by providing a marginal border portion 1t or 14, 14h to the sole base-1.1 or`11a that extendsappreciably laterally' beyond the dilnensions of the said extra portions Ifamenabled to provide abead` ing, such as described, and having an ex-, posed surface of rough or smooth character as desired. Of course my invention .applies particularly to the feature of providing such a beading above the extra t-read portion having an exposed surface of roughened character, andby my process this etl'ect can be" obtained in a 'manner that is serviceable. and reliable. It is because ofv this latter' Yfeature that my'process is particularly a'pplicable to rubber footwear, in which, as in the case of articles of apparel generally, a slight change or improvement having merit has an appreciable effect on the art.`

I claim as my inventin:d I

1. The process of forminga boot or shoe structure having a bead at the lower edge of the boot or shoe body with its exposed surface,` roughened and having an extra 1 substantially integral structure by means of tread portion below the said bead, comprising prm'iding a boot or shoe body having a elosed bottom, providing a sole base of sufficient area to cover the said bottom and also to provide a margin to extend above the said bottom to form said bead, and providing an extra tread portion of sufficient area to cover a portion of the said bottom only, securing the said extra tread portion to the said sole base Within the said margin to form a unitary structure therewith, and then securing the said unitary structure to the said boot or shoe body, the surface of the said sole base opposed to the vsaid tread portion being roughened.

2. The process of forming a sole structure for a rubber boot or shoe comprising providing a sole base member having a knurled lower surface, and an extra tread member, both of the said members being of unvulcanized rubber, laying the said extra tread member on the said knurled lower surface of the said sole base member, placing the said members with the one so positioned above the other on a plane surface, and passing a roll over the superimposed members, whereby air will. be forced from between the opposed surfaces of the, said members and the said surfaces will be merged one with the other.

FRED ERNEST PAYNE.

lVitnesses;

B. E. SPENCER, LOUIS M. SCHMIDT. 

